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Information × Registration Number 0218U003054, 0117U002877 , R & D reports Title Research of aerodynamics and heat and mass transfer in the air stream of solid inclusions biofuels plant to create conditions for burning in an upward vortex layer popup.stage_title Head Davydenko Boris, Registration Date 15-01-2018 Organization Institute of Engineering Thermophysics of the Ukrainian National Academy of Sciences popup.description2 The purpose of the work - based on the theory of combustion of plant material to develop a mathematical model for calculating the process of burning straw pellets in the ascending air flow, to determine the basic laws of the process of burning straw pellets and to investigate the influence of regime parameters on the temperature distribution in the furnace chamber. To formulate recommendations for organizing combustion processes in a boat type boiling layer. Numerical studies of heat and mass transfer processes in a stream with solid inclusions have been carried out. The research was conducted using a numerical model developed to calculate the process of burning straw pellets in ascending air flow. The model involves the consistent flow of moisture evaporation, pyrolysis of biomass, the release of biomass of volatile gaseous substances, and their combustion in ascending air flow. Calculation schemes for heat transfer and combustion of solid particles of biofuels in the air flow have been constructed. According to the results of the research, a thermophysical model of aerodynamic and heat-mass-transfer processes in an ascending gas stream with solid fuel particles and a model of combustion of vegetable granules in a fluidized bed were created. The fields of velocities and temperatures of the gas flow in the prismatic channel, in which the combustion of vegetable granules occurs, is obtained. The influence of the rate distribution in the gas flow on the formation of the temperature field in the channel is determined. Distributions of the channel height are averaged over its cross-section of temperatures and concentrations of gaseous substances formed as a result of pyrolysis of plant raw materials and combustion of volatiles and carbon residue. The processes of combustion of single pellets of biofuel from straw and wood are investigated. Dependence of the temperature inside the granules in the processes of their combustion is constructed. Experimental investigations of combustion processes of biofuel pellets in the bulk layer in a pellet burner connected to a household water-heating boiler have been carried out. Depending on the time of temperature in the firebox of the boiler under different modes of feeding pellet fuel from the hopper, it was found. Using the gas analyzer, the chemical composition of the flue gases produced by combustion of biofuel pellets is investigated. The generalization of the research results and the formulation of recommendations for the organization of aerodynamics and combustion processes in boilers of the boiling layer as well as in pellet burners of household water-heating boilers have been formulated. Product Description popup.authors Андрейчук С.В. Басок Б.І. Гончарук С.М. Давиденко Б.В. Кужель Л.М. Новиков В.Г. Приємченко В.П. popup.nrat_date 2020-04-02 Close